html,body,#app
  width: 100%
  height: 100%

.page-container,
.module-container
  display: flex
  align-items: center
  justify-content: center
  height: 100%

.fade-enter-active,
.fade-leave-active
  transition: opacity .5s

.fade-enter,
.fade-leave-to
  opacity: 0
